React Js Format Currency

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script>
  </head>

<body>
    <div id="app"></div>
    <script type="text/babel">
      function App() {
        const amount = 12315;

const formatter = new Intl.NumberFormat("ar-SA", {
          style: "currency",
          currency: "SAR",
        });

return (
          <div className="container">
            <h3>React Js format number to Saudi Riyal (SAR)</h3>
            <p>Amount:{amount}</p>
            <p>Formatted Currency: {formatter.format(amount)}</p>
          </div>
        );
      }
      ReactDOM.render(<App />, document.getElementById("app"));
    </script>